Knitting darning machine



Nov. 1, 193s. Y QBERMAYR v 2,135,142"

KNITTING-DARNING'MACH'INE n Filed Mayan,` 1937 f2 sheets-sheet 2 lge 6.

l1o vention Vtwoloopers for the formation .of meshes e Aen Patented Nov. 1, 1938 i xNI'r'rIivG DARNING imonline` APaul obervmayr, Mittweiaaoermany n 1 Application May zo, .1937, serial No. 143,659

In Germany May 22.1936

. Y 11 claims. The invention relates tof a machine for mending knitted articles or fabrics by. which machine knitting loops or meshes can belformed. and

which works inthe manner ofl acne-thread sewing machine. p Y

The invention has for its mainv object tof so construct the knitting darning machinethatthe formed series of meshes or loops canbe locked or bound off at any rn'oment. u'

For thisrpurpose in accordance with'the vinare provided,` adapted towork alternately ,vizi

a knitting looper fortheformation of meshes and' a linking looper for lockinglthe lastf'sries of meshes.' f i A further object of the inventionV is to sojconfA struct Vthe mesh formingV and. mesh retaining i y parts that they are ada'pted'tol cooperate-selecf tively with both loopers. c

Further objectsvand advantages of theinvention will nowbe described,y the drawings showing a constructional example. i K,

Fig. 1 shows the machineA in side elevation and partly in section;` L

Fig. 1a shows diagrammatically ineiraggerated i manner the relative position of the ,needle axis to the jneedlebar axis'duringthejknitting work proper; v j l j Fig. 1b shows said relative position during the 3o work of locking 'or binding 011;

` "for driving the looper; i Fig. 14 shows anelevation of the switch-oven rigs. 2 and s'snow the ,feed `im;chanisiii'mi the worktable; y

Fig. 4shows the 'ratchetlmechanisnifor the feed; l Fig. 5 shows the sinker bedvwithsinker's, knitting Vloo'per and needle in the` operative position; Fig. 6 shows the mounting of the linkingand knitting loopers;

Fig. 7 shows a 1 enlarged scale;

. Figs.'811 showdiife'ent positions`of the mesh forming parts; f

Fig. 12 shows an elevation'of Fig.` 13 shows an elevation of the eccentric-disc'- device for the linking iooper.`

In one method of carrying out the invention,

y thenframe of the machine is similar to that ofafy single-thread sewing machine. This frame is provided with a housingl I in which terminates the lmain shaft 2. Mountedon the main shaft is a. double `camdisc 3 (Figs. l,2`.a nd 13) .which by means ofleverorsimilar' element! actuates partofthe table in plan on an u (ci. cse-2i ,up y p c Y the hook sinkers 5 and also .imparts anoscillatory movement `:to 'the knitting looper t.'` For .,controllingthe lever'4 the'disc 3 ,hasan orbitalv 'cam groove 3a, (Fig. 12) into which a` pin 4a`of 'the leverengages.- Thefknitting'looper'r has a -"..wheel8=1(Fig.v6) ofthe linking looper19, and

v.drives the latter. `;The knitting and linking loopj jers aremountedon a common plate or disc AIIl which .is E rotatably; mounted in Vthe -housing wall I by; means of abush Il: kThe work drum encloses the ho'usingl,` on which it -is rotatably mounted., '.Ihe workdrum- I2 carriesthe sinker bed J3, inrwhich theisinkers 5 'arel guided some- Whatrobliquely (Fig.V 5), andtaninternalw ring "gear, i4. yThe cover plate l5 -of' the sinker bed I3 is provided with pins or like tooth-like elementsjS jGlg. 7) at the needle slot,`.said pins beinglocated between'the individual sinkers 5. r A. disc i1.. bearing on the. lever 4 and secured to housing i. holds the hook sinkers not engaged bythe lever 4 in the closed or raised position.

K Aubevel `gear-Wheel i8 fixed rtoithermain shaft is coupled to the bevel wheelsilyand 2li mounted respectively oril lpins2| and 22. Connectedin an Vaxially slidablemanner with the bevel ,Wheels IS, are twoMaltese,cross-pinvwheels 23 and 2li.` The Worm 25 'meshing withfthe ring gear M ,is provided on either'side'wth a star wheel 26 and 2`|f engaged alternately by the pin Wheels 23 and 24. This is accomplished by means of the ratchetv mechanism shown inv Fig. 4.. The

able pin` 29- functioning alternately to `release the tw'opawls 30 and 3l. kThe pavvls are pivoted wall`28 ofthe work drum I2 carries an adjustg I 31a of` the pawls 30,-- 3I engage the recesses of the'slidableplate'36.` The pins36a and 36h on the plate36 serve as abutments for the spring 31'. Y Two forks 38 and 39 secured `to the plate 36 lengagethetwo pinfwheels 23- and 24.

nallyof Atheflfiyousing is a wide adjusting ring 40 surroundedwby a. ixed ring 4i ofthe housing Wall. vThe adjusting `ring 40 carries a spring,-

. pressed locking slide 42, the nose 43 of which en'- i gages theslot ofthe adjusting ring ill4 and' one ofthe twoy slots 54? and 55 (Fig. 14)o'f the ring 4i'.vk .A idisc is :mounted on the main yshaft 2 1'0 i shaft! tof-rotate therewith,.meshes' with agear` in a depression in the adjusting ring 40 and is provided with a recess 45. Fixed to the adjusting ring 4U is the hood 46 in which is anchored the locking plate slide spring 41. The needle 48 as shown in Fig. 1 is inserted somewhat obliquely in the needle bar 49. Fig. la shows in exaggerated manner the angle between the axis 50a of the needle bar and the axis of the needle in the knitting position 48a. kTheneedle is connected to a pin 50 passing through the needle bar. This pin is provided with a cap 5l accomodating a spring-pressed plate 52 with balll 53 for locking the pin. K j f I The operation of the machine is as follows:- With the needle in the raised position, the recess 45 of the disc 44, which rotates with the main shaft 2, is caused Ito register witlithe locking slide 42. The latter is pressed inwardly and can then be rotated as far as the knitting looper slot 55 (Fig. 14) on the ring 4l by means of the hood 46 connected to the looper plate l0, whereupon-theslide springs intov said slot. The

.knitting looper 6 having thus been'brought into the operative position, is` secured against rotation by the slide 42; andthe disc `444 is again released. The defective articlefforvexample a stocking, is pushed over the, work-drum so that the hole to be darned is situated behind the needle slot, in orderthat the first course will commence in the sound knitting. The, needle 48 is'turned so that the thread running through l,the eyelies'on' the knittinglooper side. yThe needle now plunging downwards upon the rotation of the hand Wheel passes with the--rear Wardlyfsituated hook sinker into the lower position, the sinker yielding somewhat obliquely (Fig. 5) in'order not to impede the thread-in its loop-forming operation (Figs. 8 and 9). The knitting looper is now oscillated to slide over'the sinkerand past the-needle, and on its return path takes the thread with it, in consequence of the barb, for laying the thread in the hook Sinkel' (Figs. 5, 8, 9). `During the subsequent' upward movement of the needle, the sinker also moves up with the thread, the sinker hook comes behind the holding bar 54, whereby the loop is secured from slipping out (Figs. 10 and 11). Before the needlereaches the highest position, the knitting looper againA makes the same oscillatoryvmove-` ment'in order to release the thread which is still hanging in the hook of the looper (Figs. 10 and 11), said thread being now drawn tight by the further pull of the needle. -In the highestposition of the needlewhich hasnow been reached, the pin 23a (Fig. 3). of the pin wheel 23 engages a slotof the star-wheel 26, thus producing a quarter of a revolution of the worm 25 which vadvances the ring gear i4 and hence the Workof the bevel gear drive, the two pin Wheels rotate in opposite directions, reversal of the direction of the feed of the work-drum now takes place, since the pin wheel 24 is now coupled to the star wheel 21, while the pin wheel` 23 runs idle. The needle 48 now passes seriatim' through the loops the latter loops.

forni ofa rotatable drum.

hanging in the hook sinkers, and due to the lowering of the hook sinker, the loop already suspended in the needle is removed from the hook and the new loop is laid after the Working cycle alreadydescribed until the hole or the defective part of the article has been mended. Dueto the oblique position of the needle 48, each loop after leaving the'hook sinker is forced away from the holding bar 54, while the pins IB located between thej hook sinkers prevent the fabric from being pulled or dragged into the needle slot, so that the work can be carried out without a clamping rame or the like means. VAfter completion of the'frepair, and with the needle in the raised position, the Vlocking slide 42 is released, and by means of a. partial revolution of the hood 46 connected 'to l the looper plate l0, the linking looper 9 is brought into the working position.` kThis `can be done only when the needle is out- Vis rotated through half a turn, so thatthe axis of the needle now has the position 48h (Fig. 1b) and the thread running off ,is .now brought to the opposite side within reach of the linkingy lcoper'which now makes the known linking or binding-ofi seam, but `since at the saine time ythe needle takes over theendloopshanging in the hook sinkers, therlinking looper also binds off The work is thus completed.

The width of the work may be varied as desired by'adjustment ofthe pin 29, since when the pin is in a high position it Areaches a pawl sooner than when it is in a `lower position, and there.- fore the reversing' of the feed is effected earlier or later astiesired.

`Iclaim: 31. A knitting darning machine constructed like acne-thread sewing machine, characterized by having, in addition toV a knitting looper vfor the formation of knitting meshes, a Alinking looper adapted to be made` operative insteady of the knitting looper."

2. A machine as in claim 1, characterized. by the iact that movably mounted s'inkers used for retaining the Vmeshes ,in the direction ofthe cured vthereto at an angle to tht-:axisA of saidl rby rotation about bar is adapted to be adjusted said axis. a a Y,

5. A machine as in 'claim' 1', characterized by the fact that its work table is constructed in the 6. A machine as in claiml, characzterized:` by"v .Y

the fact that the rotation of` its work table,fcon structed in the form of adrum, is made use of for bringing the sinkers oneafter the other into` cooperation with themember provided for actuation of said sinkers;

the

7. A machine as in claim 1, characterized by the factv that the knitting looper is constructed 'im 8. Afmachine asin Vclairri 1, characterizedby: j `the fact that the knitting looper andthe linking in theform offa rotatably mounted hook.

looperare mounted on a4 commonrotatable disc.

9. A machine`as iniclaim 1,`characterized by mA l the

the fact that its work table. constructed in form of a rotatable drum, is adapted `to be rotated by means of a toothed ring secured thereto into which engages a worm adapted to be driven stepwise. corresponding 'to the distance of the sinkers, by means of a Maltese cross gearing.,

10. A machine as in claim Lcharacterized by the fact that its work tab1e,vconstructed`in the form of arotatable drum, ls adapted to be ro-v tated by means or a toothed ring secured thereto f into which engages a worm adapted to be driven stepwise, corresponding to the distance ofthe sinkers in either of two opposite directions by means of either o! two Maltese crossgearings mounted for opposite rotation and engageable -`selectively with the worm.`

' 11. lA-machine as in claim '1, characterized by the fact thatits work table, constructed in the form o! a rotatable drum, is adapted to be ro 'tated by means of `a toothed ring secured thereto yintowhich engages a worm adapted to `be driven stepwise, corresponding to the distance vof the sinkersfin either ot two opposite directions by means .of either of two Maltese cross gearings mounted for opposite rotation and engageable 'selectively with the worm,l under automatic controithrough a stop connected with the v yPAUL 

